A train travelling along a straight track starts from rest at piont A and accelerates uniformly to 20ms' in 20s. it travels at this speed for 60s, then slows down uniformly to rest in 40s at point C. it stays at rest at C for 30s, then reverses direction, accelerating uniformly to 10ms' in 10s. it travels at this speed for 30s, then slows down uniformly to rest in 10s When it reaches point B. plot a graph of the motion of the train.

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?